Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
  • B41M5/506—Intermediate layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
  • B41M5/508—Supports
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
  • B41M5/5227—Macromolecular coatings characterised by organic non-macromolecular additives, e.g. UV-absorbers, plasticisers, surfactants
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
  • B41M5/5236—Macromolecular coatings characterised by the use of natural gums, of proteins, e.g. gelatins, or of macromolecular carbohydrates, e.g. cellulose
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
  • B41M5/5245—Macromolecular coatings characterised by the use of polymers containing cationic or anionic groups, e.g. mordants
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
  • B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/913—Material designed to be responsive to temperature, light, moisture
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
  • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
  • Y10T428/24901—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material including coloring matter
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31725—Of polyamide
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
  • Y10T428/3179—Next to cellulosic
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31855—Of addition polymer from unsaturated monomers
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31855—Of addition polymer from unsaturated monomers
  • Y10T428/3188—Next to cellulosic
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31855—Of addition polymer from unsaturated monomers
  • Y10T428/31909—Next to second addition polymer from unsaturated monomers

Definitions

• This invention relates to a recording material for the ink jet process as well as to a coating material for the manufacture of an ink absorbing layer for the ink jet process.
• droplets of a recording fluid or ink are applied to a recording material according to various techniques.
• images are printed directly from electronic data with very high resolution by means of digital electronic control of fine ink droplets ejected from special nozzles.
• the image produced by the ink jet process should possess the following:
• the recording material must absorb ink as fast as possible.
• the ink droplets sprayed on the material must spread out as precisely as possible in a circular fashion and in an exactly delimited manner.
• the ink diffusion in the recording material must not be too high, so that the diameter of the ink spots will not increase more than absolutely necessary.
• the recording material must have a glossy surface in order to achieve a high visual reflection density and a high brilliance of colors.
• a recording material for multicolored ink jet printing comprises as a rule a support material and an ink absorbing layer applied thereupon.
• a plastic foil such as polyester resin or diacetate resin, or paper, among others can be employed as the support material.
• the ink absorbing layers essentially comprise a pigment/binder mixture.
• the pigments serve to retain the dyestuffs from the recording liquid onto the surface of the sheet.
• a high pigment concentration leads to greater porosity of the layer (DE-PS 30 24 205). In this manner, while good stability to wiping is attained, nonetheless at the same time pigments are drawn from the ink inside the recording material, thus making the color density of the image worse.
• This recording material has the disadvantage that the material must be additionally smoothed out in a separate working step, for example, using a glazing or super calender in order to achieve the desired ink density following application of the ink absorbing layer.
• a purpose of the present invention is to prepare a recording material for the ink jet process which does not exhibit the above mentioned disadvantages, and excels in high color density and high resolution, while at the same time the ink droplets quickly reach stability to wiping.
• a purpose of this invention also is to prepare a coating material for the preparation of an ink absorbing layer for an ink jet recording material, which would make possible the preparation of the recording material without the disadvantages mentioned above.
• a polyolefin coated base paper an ink absorbing layer which contains a hydrophilic binder and an oxidized polyethylene.
• the oxidized polyethylene is present in the aqueous coating material used for the ink absorbing layer as a cationic active emulsified oxidized polyethylene.
• the hydrophilic binder is a protein containing binder, especially gelatin.
• the oxidized polyethylene contained in the ink absorbing layer is present in the coating material used for this purpose in a cationic active emulsified form.
• the oxidized polyethylene is cationic-actively emulsified with compounds from the group of the fatty amines, fatty amino acetate and quaternary ammonium compounds among others.
• the oxidized polyethylene is an oxidized polyethylene cationic-actively emulsified with a stearyl fatty amino acetate.
• the quantity of the cationic active emulsified oxidized polyethylene in the aqueous coating material amounts to between 0.1 and 5% by weight, and more preferably between 1 and 4% by weight.
• the quantity of binder in the ink absorbing layer amounts to at least 50% by weight, and preferably 70 to 99% by weight referred to the dry layer.
• the ink absorbing layer can contain white pigments, coloring agents, hardening agents, dispersing agents, wetting agents, among other auxiliary agents.
• the quantity of the ink absorbing layer amounts from 0.5 to 10 g/m 2 , and preferably 2 to 7 g/m 2 .
• the coating material for the ink absorbing layer can be applied onto the support material using all the customary coating and metering procedures, such as roller coating, engraving or nip processes, as well as air brushing or blade knife metering.
• a coating material was prepared in the following manner with amounts as in Examples 1 and 2 to follow.
• the polyolefin used for coating the base paper is preferably a low density polyethylene (LDPE) and/or high density polyethylene (HDPE).
• LDPE low density polyethylene
• HDPE high density polyethylene
• the applied quantity of the polyolefin coating which in addition can contain pigments and other additives, amounts to at least 5 g/m 2 .
• the printed images exhibit good water resistance and resistance to abrasion.
• the base paper had a basis weight of 175 g/m 2 and the reverse side was coated with clear polyethylene in an amount of 15 g/m 2 .
• the face side was coated with the following pigmented polyethylene mixture in the amount of 12 g/m 2 :
• the face side showed the following colorimetric values:
• the recording material obtained was printed in a continuous ink jet printing process and subsequently analyzed. Results are summarized in Table 1.
• a non-ionogenic stabilized oxidized polyethylene was used in addition to gelatin as coating material.
• the other conditions were the same as in Example 1.
• the ink absorbing layers according to comparison V1 and V2 were applied from an aqueous medium in the following combinations:
• the recording material was printed upon with an Excelerator 4/1120 ink jet printer of Stork X-Cel, which operates according to the Hertz ink jet printing principle and using inks developed by Stork.
• the printed images were examined for color density, abrasion resistance, water resistance and gloss.
• Stability against wiping was assessed according to the degree of the so-called "sinking" of the printing ink from surface of the material. The test was conducted separately for all four primary colors. The designation “+” means that all colors are to the same degree immediately absorbed into the sheet surface, namely penetrate inside the layer. The designation “o” means that three primary colors penetrate immediately from the sheet surface inside the layer, while the fourth primary color penetrates only after several seconds. A poor stability of the material against wiping is designated with "-” namely only weak or no penetration is observed for almost all colors.
• the recording material sample was heated in water at 5° C. steps and rubbed.
• the temperature at which the white background of the recording material showed through was taken as the measure of hygrostability and abrasion resistance.
• the gloss of the recording material was measured with a three angled gloss meter according to Dr. Lange at an angle of 60°.
• Tables 1 and 2 show that when using the recording material according to the invention, printed images can be obtained which possess high color density values and at the same time a rapid stability to wiping. Images printed on recording material prepared according to the invention also have better water and abrasion resistance values than the comparison materials.

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Citations (7)

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• 1991
  • 1991-10-26 DE DE4135388A patent/DE4135388A1/de not_active Withdrawn
• 1992
  • 1992-08-19 ES ES92114117T patent/ES2086031T3/es not_active Expired - Lifetime
  • 1992-08-19 DK DK92114117.2T patent/DK0539678T3/da active
  • 1992-08-19 DE DE59205573T patent/DE59205573D1/de not_active Expired - Fee Related
  • 1992-08-19 AT AT92114117T patent/ATE134936T1/de not_active IP Right Cessation
  • 1992-08-19 EP EP92114117A patent/EP0539678B1/de not_active Expired - Lifetime
  • 1992-10-26 US US07/966,717 patent/US5328748A/en not_active Expired - Lifetime
  • 1992-10-26 JP JP28718992A patent/JP3210097B2/ja not_active Expired - Fee Related

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